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Hi,hrhgroup
1.Fundamentals of Wireless Communication
By: David Tse and Pramod Viswanath
2.MIMO Wireless Communications: From Real-World Propagation to Space-Time Code Design
By : Claude Oestges and Bruno Clerckx
cyclic extension in ofdm
Ex. 1.assume your data sequence = s(1:N)
2.Number of guard interval , Ng = 4 of all data length
3. Nt = N+Ng (total length)
simple code for add guard interval by matlab
%new sequence
st(1:Nt) = [s(N-Ng+1:N) s(1:N)] ;
%and then simple code for remove guard interval...
normalization in matlab
Channel normalization in MATLAB
h=(1/sqrt(2)).*abs((randn(1,3)+j*randn(1,3)));
h = h./norm(h);
this method is refer channel power to be 1.
And more, i have found a good discuss about normalization here.
hope u got :D
Re: matlab
Hi,
Try to check this first "help rayleighchan or ricianchan"
By this function u can set channel's parameter in multipath fading way include other channel characteristic.
Hi, nawabumar
Are u begin study about MC-CDMA ? IF u r follow this
"h**p://users.ece.utexas.edu/~jandrews/ee381k/EE381KTA/mccdma_overview.pdf"
For No. of sub-carriers as the way to implement OFDM modulation.
matlab fir filter
Hi,
Try this " help firwiener " and read how to use. This is easy step to filtering noise and no need to design in "fir" function learn it as benchmark, then u should design parameter of "fir1" for filtering by yourself.
Re: OFDM: Synchronization
Hi,QMA
From the Rx side, assume perfect operation
(1) is the position of time index start for DFT window process of N point (only useful data length) mean as find the first edge of each symbol or some point between channel length <offset≤ max GI length in...
ofdm transmitter matlab code
Hi, minusinfinity
Follow this link friend. It's pilot based channel est for OFDM using LSE. :D
"h**p://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=13127&objectType=file"
OFDM: reception
Hi, QMA
As u said, it can be done by frame design or by identical cyclic ,prefix postfix Ex. in your simulation before u recieve useful data u could set known initial bit like "0101...1" then [GI,data]0101....1[GI,data] till the end of frame in meaning to track symbol by...
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